Adjustable framing-joint



C. BERGSTROM. ADJUSTABLE FRAMING JOINT.

APPLICAT N H'LED FEB. 2-1, 1919.

Fatented. Jan. 4, 1921.

UNITED STATES PATENT OFFICE.

CHRISTIAN BERGSTBOM, OF DENVER, COLORADO, ASSIGNOR TO THE BEEGSTROM-BREWSTER MOTOR COMPANY, OF DENVER, COLORADO, A CORPORATION OF COLO-RADO.

' ADJUSTABLE FRAMING-JOINT.

Specification of Letters Patent.

Patented Jan. 4, 1921.

Application filed February 24, 1919. Serial No. 278,955.

T 0 all whom "it may concern:

Be it known that I, CHRISTIAN BnRGsTRoM, a citizen of the United States,residing at the city and county of Denver and State of Colorado, haveinvented certain new and useful Improvements in AdjustableFraming-Joints; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the characters ofreference marked thereon, which form a part of this specification.

This invention relates to joints for framing, and while it is designedprimarily for bodies of trucks and the like, it is by no means limitedto such use. The object of the invention is to furnish a joint whichwill not weaken the timbers and which permits of tightening in case theparts become loose from vibration or other causes.

Briefly, the invention comprises a shoe having spaced ears to which ajoist is adapted to be bolted, the shoe being adapted to ride on a sillor other beam, and plates to be secured to the sill or beam andconnected with the shoe by bolts, whereby the joists and sill will berigidly secured together.

I11 the drawings:

Figure 1 is a fragmentary perspective, showing the joint in use; and

Fig. 2 is a perspective of the parts of the joint disassembled.

By means of the joint the joist A is connected to sill B, the latter inthe case of a truck being suitably mounted on the chassis rail C.

The joint comprises the shoe 10 from the opposite sides and oppositeends of which ears 12 and 14: extend upwardly, these being apertured at16 and 18, respectively, for the reception of bolts 20 by which thejoist A is secured thereto, nuts 22 being tightened on the bolts 20 tomaintain a fixed relation. A hearing plate 24 is mounted upon the sill Band has a transverse channel 26 in which the shoe 10 seats. The bearingplate is secured to the sill by apertures 27 and screws 28 therein.

The opposite ends of the shoe are provided on their under sides withbosses 30 having recesses 31 which receive the heads 32 of bolts 33which pass through the bosses 30. Plates 34 are bolted to the sill B bymeans of bolts 56 passing through apertures 38. The plates 34 havelateral lugs 40 apertured for the reception of the lower ends of thebolts 33, and nuts 42 are applied to the eX- tremities of bolts 33 todraw the sill tightly against the shoe 10 and retain the parts inposition. i

It is evident that if the parts become loose from wear due to vibration,that tightening of the various nuts and bolts will readily restore thesolidity of the joint. The diagonal positioning of the ears 12'and 14will permit the oist being drawn toward each ear when the nuts 22 aretightened, so that the joist will take a slightly diagonal position; or,if the joist will not assume an angular position, tightening of the nutswill take up any play along the length of the bolts and hold the joistin fixed and solid relation with respect to said ears.

I claim:

1. In combination, a joist, a beam, a shoe resting upon said beam, meanssecuring the shoe to the beam, a rigid upstanding ear at each of twodiagonally opposite corners of said shoe, said joist resting upon saidshoe and positioned between said ears, and two bolts having nuts, eachbolt extending through one of said ears and through said joist, wherebytightening of each nut independently will take up play of said joistalong the respective bolt.

2. A framing joint, comprising a shoe, ears on said shoe, said earsbeing positioned only at two diagonally disposed corners of said shoe,means for connecting the shoe with a beam and means on each ear foradjustably connecting the respective ears to a joist.

3. In combination, a joist, a beam, a shoe resting upon said beam, meansfor securing the shoe to the beam, a rigid upstanding ear at each of twodiagonally opposite corners of said shoe, said joist resting upon saidshoe and positioned between said ears, and ad justable means passingthrough said joist and connected with each ear to draw the joist towardthe respective ears, whereby play may be taken up.

In testimony whereof I affix my signature.

CHRISTIAN BERGSTROM.

